Nail-feeding mechanism for box-nailing machines



NAIL FEEDING MEGHANISM FOR BOX NAILING MACHINES Jane 23, 1925.` 1,542,811

J. ALBRECHT NAIL FEEDING MECHANISM FOR BOX NAILING MACHINES I N VENTOR.

B @ma/WM A TTORNE Y6.

June 23, v1925. -1,542,811

J. ALBRECHT NAIL EEDING MECHANISM FOR BOX NAILING MACHINES 'Filed Aug. 29, 1921 5 Sheets-Sheet 5 IPIC 4 A wvvvv vvvvvvvvvv IN VENTOR.

ATTORNEYS.

Patented June 23, 19,25.

, NIT-ED, s TMES .JoHN-ALBRECHT, or KEWAUNEE, WISCONSIN;

, NAIL-FEEDING AIECHANISM ron BOX-NAAHQING MACHINES.

Application med August 29.1921. serial Na; 496,468.

v To'aZZ 107mm *it mag/concern.'

Beit known that- I, JOHN ALBRECHT, a citizen ofthe United States, and resident of K'ewaune'e, in' the county of Kewaunee and State ofWisconsim haveinvented nen7 and usefulImprovements in Nail-Feeding Mechanisn'ifor BOX`Naili11g`Machines, of

' ent numbers of nails.

which the following is adescription,` refer ence being had to the accompanying draw-y ings,` which are a partof this specification.

' This invention relates to improvements in nail feeding mechanisms for box nailing machines more 'particularly' Ladapted for forming boxes and other like articles.l

An object of the inventionis to provide a feeding mechanism fora nailing machine in which any number of nailv feeds may vbe easily stopped when desired without interf feringwithfthe `operation of the remaining ,i r v nage. lhe standard 1s also provided with a nail feeds. Y. A further object ofthe invention is to provide a nailing machine particularly adapted for khigh speed yworlrin which the nail feeding `mechanism of the machine `can only feed one nail at a time to its driving hammer. Y u l A further Vobject ofthe invention vis to provide a nailing machine which may be adjusted tdautomatically drive a different number 4of nails on different Aside'edge portions of aboX fed thereto.

" Af further object' of the invention. lis tol provide a nailing machine which 'may be adjusted 'to' alternately drivefagdifferent number ofnails at each stroke of the'driving hammer. f 5 i' f 7 H 'Afurther objectof the rinvention is to provide a nailing machinewhich may be ad j usted' to vautomatically alternately A drive a predetermined number of nails or which maybe manually controlled to drive differ- `A further object of the invention is to providev a nailing machine which is of simple construction, iis strong and durable Vandis well adapted for the purpose described.

'lVith the` above and other objects in view the vinvention consists of the improved nailing machine and its'p'arts'and combinations as set forth .in theclaims,v and all equivalents thereof. Inthe accompanying drawings in which the same reference characters indicate the same parts in all of the views :Y

Fig. vlis a side viewpfthe improved nailing machine;`

line (5*6 of Fig. 4.

F 2 isafront' view thereof; K' Fig. '3 is a vertical sectional detail view, on a larger scale, of the nail feeding portion of the machine;

Fig. 4 isa vtop View of the machine,v taken on ;a larger scale;l y

Fig. is rear view of the lower portion of the machine taken on a larger scale; and Fig. 6 is a sectional detail View taken on Referring to the drawings the numeral 8 indicates the base' portion of the machine and 9 the standard which isv formed with vertically extending ,guide 'rails v10 upon which is slidably mounted a box holdingv platform or carriage llfSaid carriage is adjusted vertically in any mannerl desired by. means of the vertical screw l2V which has a yielding nut connection 18 with the carforwardly extending frame portion '14, a

counter shaft 2 2 also journal'ed in the-stand` ard. Said counter shaft 22 Vat its opposite end carries a gear 23 which is in mesh with a ygear 24 mounted on'a front counter shaft 25. The intermediate counter shaft 22 also carries an eccentric 26` engaged by a connecting rod 2T which at its upper end is con nected' to and reciprocates the arm-16 carryF ing the hammers; The gear 2l'is loose on the shaft 22 and is provided-with a clutch 28 of ordinary construction which locks the gear to saidrshaft'. Affoot lever 29 mounted on the base portion 8 ofthe machine controls the operation of the clutch so that when pressed downwardly by the operator the 'clutch will connect the gear 2l to the shaft 22 and turn the same one complete revomounted on the shaft 18.- Said construction oscillates the receptacle 30 and causes the nails 35 to feed downwardly from said receptacle and through the nail slots 36 of the frame 14. Segmental nail feeding members 37 journaled on the' frame 14 are formed with peripheral nail recesses 38 which are in register with the nail slots 3G when in a normal position of rest, and are of a size to just receive the shank portion `of the nails. The segmental members 37 are formed with forwardly projecting arms 37 which are provided with laterally extending adjustable screw stop members 38 which bear against stop rollers 39 mounted on a reciprocal bar 40. Said bar 40 is reciprocated by means of a cam arm 41 which is rigidly mounted on and entends upwardly from the reciprocal arm 16. The cam arm extends through an end portion of the reciprocal bar and its angular oii'set portion 41 moves said bar back and forth. @oiled springs 4Q, connected to peripheral portions of the segmental members land to portions of the frame 14 exert a tendency to swing the notched portions ofthe segmental members tothe left, with reference tok Fig. 4, and into register with tubular conveyors 43. As.. the adjusting screws 38 of the segmental member 37 bear against the stop rollers'39 the reciprocation of the bar 40 and the stop rollers will oscillate the segmental members and said segmental members will each carry a nail 35 from its respective slot 36 anddrop it into its respective 'tubular conveyor 43. The conveyors 43; lead `downwardly to discharge openings l5 in the nail receiving arm 15 which intersect hammer guide openings 44 also in 4said arm l5. The guide openings 44 areapproximately of the same diameter as the hammers 17 but slightly smaller than the heads'of the nails so thatwhen said nails enter the openings from the larger openings of the tubular conveyors 43 they will be held at the points of intersections of the openings 15 with the openings 44. T'o permit the further downward movement of the nails a portion k43 'of the arm 15, is yieldingly mounted by means of bolts and springs 44 t'o give outwardly to increase the size of the openings 44 so that the hammers can force the nails therethrough rand into the box part to be nailed while being guided by the arm l5.

A rock shaft 45 positioned in front of and carried by the upper franie part v 14 has mounted thereon stop lingers 46 which are adapted to be swung upwardly inte the pat-h of movement of the arms' 37 of the segmental members v37 when desired to stop the feed 'of nails to all or any number of the tubular conveyors 43. The shaft 45 is rocked at predetermined periods by means of an arm 47 mounted on the shaft 45 and having a link and bell crank connection 48 with a cam 49 mounted on the shaft 25. As the gear '23 is about one half the diameter of the gear 24 the shaft 25 will only be rotated at half the speed ofthe shaft 22 with the result that the stop 4fingers 46 when locked to the rock shaft, will only be swung into the paths of movement of the arms 37 every 'other reciprocation of the arm 1G, so that if one finger 4G is locked to the shaft the machine will alternately drive three nails and then two nails at each stroke.l Screws 46 are provided for locking the lingers to the shaft 45. Vvliile the machine as shown is adapted to drive three nails at each stroke it is to be understood v'that the parts may be duplicated to drive any number of hails desiredj that ngers may be adjusted to alternately drive different niunbers of nails without departing from Vthe spirit and scope of the invention. Thelink connection 48 may be disconnected and the arm 47 be turned by hand to stop the feed of nails to the tubular conveyors 44 or to any number of said conveyors.

In use if adjusted in the manner described, a box requiring three nails on each side and two `nails on each end may be quickly nailed and the respective sides and ends of the box be alternately nailed automatically with the correct number of nails in each part.

From the foregoing description it will be seen that the nailing machine is of very simple construction and is well adapted for the purpose described.

What I claim as my invention is:

1. nail feeding mechanism for a nailing machine provided with a plurality of nail drivers, comprising a plurality of nail raceways having offset portions; a nail feeding member comprising an oscillating disc associated with each of said ra'ceways provided with 'a recess in its edge adapted to register alternately with the offset portions of said raceway, whereby a nail maybe received therein from one portion and be moved to the other portion; resilient means for movingsaid feeding members in one direction; positive means for moving ksaid members in the other direction; andhand set automatically operated means for preventing the functioning of said resilient means at predetermined intervals to stop the oscillations of certain of said feeding discs on alternate operations of said nail drivers.

, 2. In a nail feeding mechanism for nailing machines, a plurality of nail raceways having offset portions; an oscillating feeding disc operatively associated with each of said raceways to receive and transfer nails from one portion vto the other thereof; an arm rigidly secured to each of said discs; a positively actuated slide bar for engaging and moving said arms and discs in one direction; spring means for moving said discs and arms in the other direction; a rock shaft;

rock shaft adapted to engage said arms and,

to prevent their movement under theiniluv ence of said springs.

3. In a nail feeding mechanism for nailing machines, a pluralityof nail raceways having offset-portions; anoscillating feeding disc operatively associated With each of said raceways to receive and transfer nails from one portion tothe other thereof; an arm rigidly secured to each of said discs; a positively actuated slide barfor engaging and movingsaid arms and discs in one direction; spring means for moving said discs and arms in the other direction; a rockV shaft; and a plurality of sleeves each provided with a stop finger readilyadjustably carried by said rock shaft, said fingers beingladapted to engage said arms and to prevent theirmovement under the influence of said springs. p

v 4. In a nail feeding mechanism for nailing machines, a plurality of oscillating nail feeding members each provided with an arm; an adjustable stop carried by each-of said arms; a' cam actuated slide vbar provided with rollers adapted to coact with said stop `members to move saidarms in one direction; spring means for moving said arms in the other direction; a rock shaft; and adjustable stop lingers carried by said rock shaft adapted to be moved into the paths of said arms to prevent their movement by said springs. In testimony whereof, I affix my signa ture. y

JOHN ALBRECHT. 

